Tube-cleaner.



W. ERNST & A. A. PATTON.

TUBE CLEANER.

APPLICATION FILED MAY 4, 1908.

1,097,309. Patented May 19, 1914.

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WILLIAM ERNST AND ALVA PATTON, 0F SAN FRANCISCO, CALIFORNIA.

TUBE-CLEANER.

T 0 all whom it may concern Be it known that we, IVILLIAM ERNST and ALVA A. PA'ITON, citizens of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented certain new and useful Improvements in Tube -Cleaners, of which the following is a specification.

Our invention relates to improvements in tube cleaners,

The object of said invention is to provide a tube cleaner that is uniform and rapid in operation, simple in construction, easily adjusted and which operates with a minimum of power, the same being particularly applicable to boiler tubes.

Our invention consists in the novel ar- 'angement and combination of parts described in the following specification, shown in the accompanying drawing and claimed in the appended claim.

Referring to the accompanying drawing, Figure 1 is a side view of our tube cleaner. Fig. 2 is a longitudinal section of the same and Fig. 3 is an end of the same, looking from the left of Fig. 1.

In the figures, A shows the frame of said tube cleaner. Said frame has the arms 2 carrying a shaft to which is securely fastened the cutters 4 and 5 having teeth 6 and 7 respectively. 8 is the spacing sleeve and 9 is a nut for clamping the cutters at and 5 on the shaft 3. In the outer end of each of the arms 2 is inserted a pin 10 adapted to retain the shaft 3 within the slots 2 formed in said arms.

11 is a hub on frame A to which is fastened the shaft 12 driven by any suitable source of power. The shaft 3 is mounted eccentric to driven shaft 12 and is impelled centrifugally in the said slot 2 toward the surface of the tube with which teeth 6 and 7 contact in the revolution of said shaft 12.

The motion imparted to the device in its operation is that of a crank shaft, as that of a straight shaft would result in the cutters remaining in the same position, the bases of the slots as shown in Fig. 2 being above the center of shaft 12 so as to impart such a differential motion as to produce a combined Specification of Letters Patent.

Application filed May 4., 1908.

Patented May 19, 1914.

Serial No. 430,728.

grinding and beating effect by the movement of the shaft 3, giving the maximum result.

The ends of the cutter 4 and the inner end of the cutter 5 are preferably curved convexly so as to avoid contact with ad jacent parts when the same are we -n except at the center of the same, thereby reducing friction. The outer end of the cutter 5 is preferably straight so as to give a greater cutting surface at such point. The preferred form of the teeth of the cutters as shown in Fig. 3, is such as to give the best results in the removal of the incrustations in tubes or other parts wherein the device is intended to be used by reason of their widththus giving increased strength and power in the work. If desired the shaft 8 may be shortened, and the same threaded in proximity to sleeve 8 and the nut 9 secured thereon so that merely the cutter 4 will be in use. Our device may be used under varying speeds of rotation of the shaft 12 whereby the device is operated.

8 shows a boss which is secured to shaft 3 and countersunk into cutter 4L. Said boss presents an even surface to the contiguous arm 2, the same acting as a guide as well as a support for said arm. The convex curving of the cutters, as mentioned, gives a longitudinal pushing movement to the incrustations encountered.

The device having but a single frame A and the arms thereof being parallel, and one of said arms being secured centrally by a shaft as shown in Fig. 1 and Fig. 2, a roller or cutter of far greater weight and diameter may be used than if the device employed a central shaft with the rollers or cutters positioned and operating on the sides thereof, thereby giving the device increased power and efliciency, besides requiring less power to operate one or' more of the rollers or cutters as illustrated, the same being but slightly eccentric and the rotation attainable being very high.

A tube cleaner consisting cf an operating shaft, a head or frame detachably secured thereto, said head having parallel arms with open slotted ends and a connecting Wall for In testimony whereof we aflix our signasald arms; a rotatable shaft havlng a boss tures, in presence of two Witnesses. thereon and seated in said slotted arms, a

T r cutter on said shaft and means closing said X %R E%%S 5 open slotted ends said cutter shaft being on one side of the center of said operating shaft Witnesses: and said cutter extending on the opposite CHAS. T. STANLEY, side thereof. It. G. DABM.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

